Toyota Sequoia (2005). Manual — part 641
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2359
2553
INSPECTION PROCEDURE
1
Actuator check.
PREPARATION:
(a)
Remove the glove compartment door to see and check the air inlet damper operation.
(b)
Set to the actuator check mode (See page
).
(c)
Press the DEF switch and change it to step operation.
CHECK:
Press the DEF switch and check the operation of the air inlet damper.
OK:
Display Code
Air Inlet Damper
0 – 2
FRS
3
REC/FRS
4 – 9
REC
HINT:
However, if DTC 42 is displayed, replace the integration control and panel.
OK
Proceed to next circuit inspection shown in
problem symptoms table (See page
NG
I25201
REC
FRS
DI–2360
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2554
2
Check air inlet damper control servomotor.
PREPARATION:
Remove the air inlet servomotor (See page
).
CHECK:
Connect the positive (+) lead to terminal 4 and the negative (–)
lead to terminal 5.
OK:
The lever moves smoothly to the REC position.
CHECK:
Connect the positive (+) lead to terminal 5 and the negative (–)
lead to terminal 4.
OK:
The lever moves smoothly to the FRS position.
NG
Replace air inlet servomotor.
OK
3
Check harness and connector between air inlet servomotor and integration con-
trol and panel (See page
).
NG
Repair or replace harness or connector.
OK
Replace integration control and panel.
I28841
Integration Control
and Panel
5
IJ3
I21
9
RrAMC
RrAMH
L–B
BH1
3
4
R–G
R–G
A34
A/C Water Valve (Rear)
R–G
L–B
2
8
10
L–B
w/ Rear A/C:
7
M.COOL
M.HOT
I21
IJ3
BH1
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2361
2555
DTC
47
Water Valve Damper Control Servomotor
Circuit
CIRCUIT DESCRIPTION
The water valve damper control servomotor is controlled by the integration control and panel and moves the
water valve damper to the desired position.
DTC No.
Detection Item
Trouble Area
47
Water valve damper position sensor value does not change
even if integration control and panel operates water valve
damper control servomotor.
Water valve damper control servomotor
Water valve damper position sensor
Harness or connector between water valve damper control
servomotor and integration control and panel
Harness or connector between water valve damper position
sensor and integration control and panel
Integration control and panel
WIRING DIAGRAM
DI936–04
I28853
5
4
WARM
I28854
COOL
5
4
DI–2362
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2556
INSPECTION PROCEDURE
1
Check water valve damper control servomotor.
PREPARATION:
Remove the water valve servomotor (See page
CHECK:
Connect the positive (+) lead to terminal 5 and the negative (–)
lead to terminal 4.
OK:
The lever turns smoothly to the warm side.
CHECK:
Connect the positive (+) lead to terminal 4 and the negative (–)
lead to terminal 5.
OK:
The lever turns smoothly to the cool side.
NG
Replace water valve servomotor.
OK
2
Check harness and connector between water valve servomotor and integration
control and panel (See page
NG
Repair or replace harness or connector.
OK
Replace integration control and panel.
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